Sym MaxSym 600i ABS Service Manual

1. General Information
1-14
B. Engine runs sluggish (Speed
does not pick up, lack of power)
Check and adjustment
Fault condition
Probable causes
Accelerate gradually and
check engine RPM
Engine RPM cannot be
increased
1. Replace the fuel injector
Engine RPM can be
increased
1. Clogged air cleaner
2. Poor fuel supply
3. Clogged exhaust pipe
4. Clogged fuel injector
Check ignition timing
(Using ignition lamp)
Correct ignition timing
Incorrect ignition
timing
1. Malfunction of ECU
2. Malfunction of AC Generator
Check cylinder
compression pressure
(using compression
pressure gauge)
Normal compression pressure
Abnormal compression
pressure
1. Worn out cylinder or piston ring
2. Cylinder gasket leakage
3. Sand hole in compression parts
4. Valve deterioration
5. Jammed piston ring
Check if the fuel
injector is clogged or
not
Not clogged
Clogged
Remove and check the
spark plug
Contaminated or
discolored
No contamination or
discoloration
1. Remove the dirt
2. Incorrect spark plug heat range
1. Worn out piston or cylinder
2. Abnormal fuel injector
3. Poor fuel quality
4. Carbon deposit in the combustion
chamber
5. Abnormal ignition timing
Normal
Engine overheated
Check if the engine is
over heated
Continually drive in
acceleration or high
speed
No knocking
Knocking
1. Carbon deposit in the combustion
chamber
2. Malfunction of fuel injector
3. Poor fuel quality
4. Abnormal ignition timing
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Sym MaxSym 600i ABS Specifications

General

Brand	Sym
Model	MaxSym 600i ABS
Category	Scooter
Language	English